Improvement in stove-pipe joints



l. WILLGING. Stove-Pipe Joints.

Patented April 28, 1874.

No.l50,383.

@ff/f UNITED STATES JACOB WILLGING, OF DUBUQUE, IOVA.

IMPROVEMENT IN STOVE-PlPE JOINTS.

Specification forming part of Letters Patent No.

150,3S3, dated April 28, 1874; application tiled April 6, 1874.

To all whom it may concern:

Be it known that I, JACOB WILLGING, of Dubuque, county of Dubuque, State of Iowa, have invented a new and useful Improvement in Extension Attachments for StovePipes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making part of this speciiication, in which- Figure l is a vertical cent-ral sect-ion of my improved extension attachment for stove` considerable amount of lap, as shown. To a malleable-iron collar of the section A a long thin bar, a, having an angular bend, a', in it, is fastened by rivets, as shown. Thus applied the bar stands out a short distance from the inner circumference of the pipe, and extends down considerably into the section A. To the section A a clamp-box, b, is riveted. The cap and liange b1 of this box are on the outside of the pipe, while the grooved portion b2 is inserted through the pipe, and occupies a place within the section A. Through the cap and the grooved end portion of the clamp-box a sliding clamping-collar, d, is passed, and on the stem d1 of this collar a screw is cut, and on this screw a thumb-nut, cl2, is fitted, as shown. When the sections A A are put together the end of the bar a is passed down through the rectangular hole in the collar just behind the grooved end of the clamp-box, as shown, and it is evident that by turning the. thumb-nut the collar will be drawn into the groove, and will carry along with it the rod until the rod bears against the clamp-box, and is clamped so as not to be able to move up and down until the nut is slackened.

By this invention a stove-pipe may be shortened or lengthened, and thus adjusted for tluholes placed at different altitudes.

I do not claim a rod and a clamp applied outside of a stove-pipe, as such contrivance is old. I do not claim the plan for extending stove-pipes shown in the patent of S. Johnson, granted March 18,1873, nor do I claim the plan for a like purpose shown in the applica tion of J. WV. Kohn, filed April 9, 1869, because the former necessitates the arrangement of the main parts outside of the pipe, and the latter necessitates the slotting ofthe pipe, but

What I do claim as new, and desire to secure by Letters Patent, is

The combination of the bent rod a, thc grooved clamp-box b, and the sliding clamp ing-collar d, applied upon the two adjacent sections A A of a stove-pipe, the rod, thc grooved portion of the box, and the collar ot' the clamp, being all within the pipe, substantially in the manner herein described.

J Inns JonNsToN, LEwis B. TUTTLE. 

